Main features
It meets all on-site testing requirements. It can test various traditional relays and protection devices, as well as various modern microprocessor-based protection devices, and is particularly convenient for testing transformer differential protection and automatic transfer switch devices.
1. It has a standard four-phase voltage and three-phase current output simultaneously, with a voltage of 125V per phase and a current of 40A per phase.
Three-phase current in parallel can reach 120A.
2. All technical indicators fully meet the standards of DL/T624-1997 "Technical Conditions for Microcomputer-based Test Devices for Relay Protection" issued by the Ministry of Electric Power.
3. Standalone operation, built-in high-performance industrial computer, 300-600MHz main frequency, 512M memory, 4-12G hard disk, running Windows XP operating system.
4. The first in the domestic industry to adopt imported brushed stainless steel panel and stainless steel keyboard, and also adopt a touch mouse, overcoming the shortcomings of trackball mouse inflexibility and easy damage. It also uses an 8.4-inch TFT true color display screen with a resolution of 800×600, making the overall operation of the machine convenient and easy, and durable.
5. The main control board adopts a DSP+FPGA structure with 16-bit DAC output, which can generate a high-density sine wave of 2000 points per cycle for the fundamental frequency, greatly improving the waveform quality and enhancing the accuracy of the tester.
6. The power amplifier adopts a high-fidelity linear power amplifier, which ensures both accuracy at low currents and stability at high currents.
7. It uses a USB interface to communicate directly with a PC without any adapter cables, making it convenient to use.
8. Can be connected to a laptop to run. The laptop and industrial control computer use the same software, so there is no need to relearn how to operate it.
9. Equipped with GPS synchronization testing function. The device can be equipped with a built-in GPS synchronization card (optional) and connected to a PC via RS232 port to enable two testing instruments to perform synchronous switching tests remotely.
10. Equipped with an independent DC auxiliary voltage source output, with output voltages of 110V (1A) and 220V (0.6A) respectively. This is for use by relays or protection devices that require DC operating power.
11. It has a software self-calibration function, which avoids the need to open the chassis and adjust the potentiometer to calibrate the accuracy, thus greatly improving the stability of the accuracy.
Technical parameters
1. Alternating current source:
Phase current output (RMS): 0-40A / Phase accuracy: 0.2%
Three-phase parallel output (RMS): 0-120A / Three-phase parallel output
Permissible long-term operating value (RMS) of phase current: 10A
Maximum output power per phase: 420VA
Maximum output power of three-phase parallel current: 900VA
Maximum allowable operating time for three-phase current output: 10s
Frequency range: 0-1000Hz Accuracy: 0.001Hz
Harmonic order: 2nd-20th; Phase: 0-360°; Accuracy: 0.1°
2. Direct current source:
Current output: 0--±20A/phase accuracy 0.5% 300 VA
3. AC voltage source:
Phase voltage output (RMS): 0-125V/phase accuracy: 0.2%
Line voltage output (RMS): 0-250V
Phase voltage/line voltage output power: 75VA/100VA
Frequency range: 0-1000Hz Accuracy: 0.001Hz
Harmonic order: 2nd-20th; Phase: 0-360°; Accuracy: 0.1°
4. DC voltage source:
Phase voltage output amplitude: 0--±150V; Accuracy: 0.5%
Line voltage output amplitude: 0--±300V
Phase voltage/line voltage output power: 90VA/180VA
5. Switch terminals:
Digital input terminals: 8 pairs
Open contact: 1-20mA, 110V, internal active output of the device.
Potential reversal: 0-6VDC is a low level.
15-250VDC is a high level
Switch output terminals: 4 pairs, dry contact breaking capacity: 110V/2A, 220V/1A.
6. Time measurement range:
Range: 1ms--9999s Measurement accuracy: 1ms
7. Volumetric weight:
Dimensions: 365 mm × 400 mm × 195 mm Approximately 18 kg
8. Power supply:
AC220V±10% 50Hz 10A
